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Carburetor, Carburettor, Carburetter, Tomato Can?

Would you believe someone if they tell you that the first Harley Davidson produced in 1903 used a tomato can for its carburetor?

You may find this story hard to believe but although undocumented, this tomato can carburetor urban legend has been circulating for years.

It is a fact though that the carburetor was invented by Wilhem Maybach. As an associate of Gottlieb Daimler, Maybach designed and developed the carburetor from which modern models are adapted from today.

A carburetor works as a device that mixes fuel and air that burns inside an internal combustion engine. In that internal combustion engine, chemical energy from the fuel is them burned into a combustion chamber. Chemical energy then transforms into mechanical energy which eventually powers the motor of a vehicle.

But even before fuel and air is transformed into mechanical energy by an internal combustion engine, it must first pass through the carburetor for it to be utilized. It is in the carburetor where the fuel, usually liquid gasoline, is atomized or changed into liquid vapor.

To fully understand how a carburetor works, let us first get to know its parts.

The basic carburetor has a cylindrical hollow tube encasement called a throat or a barrel.

Inside the barrel are pistons. These pistons are solid cylinder disks that slide back and forth in the barrel. Pistons fit snugly into the barrel to allow it to move freely but are tight enough not to let air or fluid leak in the barrel.

As the pistons move downward, a partial vacuum is created inside the barrel. This partial vacuum then draws air past through the carburetor's throat and into a nozzle that sprays fuel. The mixture of air and fuel in the carburetor is then delivered into cylinders for combustion.

The amount of air pulled through partial vacuum created by the pistons is controlled by a throttle valve. The throttle valve is found at the base of the carburetor.

When a driver accelerates his automobile by stepping on an accelerator or a gas pedal, the throttle valve opens. The wider the throttle valve opens, the more air flows into the carburetor. Thus more fuel flows into the engine.

A passage way called a venturi is located at a carburetor's barrel. A venturi looks like an hour glass when it narrows down. When air rushes through the narrow ends of a venturi, the air pressure against the sides of the passage way decreases.

With this, partial vacuum is created inside the barrel. This partial vacuum then draws the fuel through the nozzle and into the air.

The pistons create partial vacuum to draw air while the venturi is responsible for drawing partial vacuum to feed fuel into the nozzle.

A float chamber or float bowl is the reservoir where fuel that enters the carburetor is stored. At the reservoir's surface, a device that floats is linked to a small valve to keep a constant amount of fuel inside the reservoir.

The carburetor also has two other nozzles are aside from the main nozzle found at the venturi of the carburetor - the idle port and the off-idle or transfer port.

The idle port, found just below the venturi, is responsible for getting fuel into the engine when there is minimal airflow in the carburetor. This happens when the engine is at a low speed.

The off-idle port, found above the idle port, feeds additional fuel to the engine during low engine speed.

An engine vacuum draws fuel from these two ports. Collectively, the off-idle port and the idle port keep the engine supplied with fuel when it is running at low speed. The main nozzle is the one responsible for keeping the engine running at normal operating speeds.

In 1985, most vehicles' carburetors had been replaced by fuel-injection, a computerized and more efficient way of injecting fuel into the engine. But even so, we cannot deny that the technology brought by the carburetor made it possible for the automotive industry to flourish and advance.

Who would have thought what a single tomato can could do?

About the Author

James Monahan is the owner and Senior Editor of

CarburetorMax.com
and writes expert
articles about
carburetors
.

Fuel Valve $8.92 Fuel Shut-Off Valve. Male threaded Mount. Male Threaded Mount Thread Size: M10x1.5 mm Outlet Diameter: 5mm

Harley $10 Harley

Pingel Designer Smooth Power-Flo Petcock Outlet Facing Forward for 1975-2006 Harley Davidson Sportster/Big Twin $99.41 . Pingel Designer Smooth Power-Flo Fuel Petcock Valve Outlet Facing Forward Model # 1311-CR Fitment: 1975-2006 Harley Davidson Sportster 1975-2006 Harley Davidson Big Twin **Note: Actual picture might differ slightly depending on make and model

Fuel Check Valve Assemblies $21.95 Drag Specialties Fuel Check Valve Assemblies Drag Specialties Fuel Check Valve Assemblies meet or exceed OEM requirements and gets the fuel where it needs to go. Includes check valve, required fittings and line For Delphi EFI systems only Note: Actual configuration my differ from image depending on model

Standard Electronic Fuel Injection Throttle Position Sensor for 2001-2008 Harley Davidson Sotail/Touring/Dyna/XL H-D27629-01 $59.22 . Standard Electronic Fuel Injection Throttle Position Sensor Model #: MC-TPS1 Fitment: 2001-2005 Harley Davidson Sotail 2002-2005 Harley Davidson Touring 2004-2005 Harley Davidson Dyna 2007-2008 Harley Davidson XL

Bolt On Fuel Valve Type-1 $16.85 Vacuum activated, bolt on fuel valve for 2-stroke scooters. There are two versions of this fuel valve. This Type-1 has a Small Course Thread Pattern where it bolts to the fuel tank coupler. The Type-2 version has Larger Course Threads. Thread Size: M16x1.00

5/16-Line Fuel Valve $13.99 Motion Pro 5/16"-Line Fuel Valve For use with auxiliary fuel tank or other use requiring an in-line installation Feature double neoprene seals and O-rings Smooth and positive operation Not recommended for engines over 300cc

3/16-Line Fuel Valve $10.99 Motion Pro 3/16"-Line Fuel Valve For use with auxiliary fuel tank or other use requiring an in-line installation Feature double neoprene seals and O-rings Smooth and positive operation Not recommended for engines over 200cc

Fuel Shut-off Valve $8.92 Most common type of fuel shut-off valve, female thread. Total Length: 120mm (4a inches) Fuel Outlet Inner Diameter: 2.58mm Bolt Outer Diameter: 18.50mm Bolt Inner Diameter: 13mm

Bolt On Fuel Valve $16.85 Bolt On Fuel Valve Switch for 150cc and 125cc 4-stroke QMJ152/157 QMI152/157 GY6 engine based scooters and vehicles. Inner Diameter of Nut: 14.40 mm Takes 6 mm fuel line Filter Length: 59 mm

Bolt On Fuel Valve Type-2 $16.85 Vacuum activated, bolt on fuel valve for 2-stroke scooters. There are two versions of this fuel valve. This Type-2 has a Larger Course Thread pattern where it bolts to the fuel tank coupler. The Type-1 version has Smaller Course Threads. Thread Size: M16x1.5mm Vacuum Port and Fuel Outlet Outer Diameter: Approximately 5mm Related Scooters And Parts: Gas Scooters Motorized Scooters Electric Scooters Ride On Cars

Standard Electronic Fuel Injection Barometric Sensor for 1995-1998 Harley Davidson FLH/FLT H-D 32424-95 $56.75 . Standard Electronic Fuel Injecton Barometric Sensor Model # MC-MAP1 Fitment: 1995-1998 Harley Davidson FLH 1995-1998 Harley Davidson FLT

Standard Electronic Fuel Injection Pressure Regulator for 1995-2001 Harley Davidson FLH/FLT H-D27219-95 $63.79 . Standard Electronic Fuel Injection Pressure Regulator Model # MC-FPR1 Fitment: 1995-2001 Harley Davidson FLH 1995-2001 Harley Davidson FLT

Standard Electronic Fuel Injection Idle Air Control Motor Assembly for 2006-2010 Harley Davidson Dyna/Softail H-D27658-06 $44.08 . Standard Electronic Fuel Injection Idle Air Control Motor Assembly Model #: MC-IAC2 Fitment: 2006-2010 Harley Davidson Dyna 2006-2010 Harley Davidson Softail

Fuel Valve Switch $16.85 In-Line Fuel Valve Switch for 150cc and 125cc 4-stroke QMJ152/157 QMI152/157 GY6 engine based scooters and vehicles. We carry a large selection of scooter parts , gas scooters , and electric scooters for sale.

Arlen Ness Twin Sucker Air Filter Assembly for All 2000-2010 Harley Davidson Cabureted and Fuel Injected Except 2000-2001 Fuel Injected FLH FLT $331.96 . Arlen Ness Twin Sucker Air Filter Assembly for 2000-2009 All Carbureted and Fuel Injected Harley Davidsons (Except 2000-2001 & 2008-2009 Fuel Injected FLT) Bike Fitments: 2000-2009 All Carbureted and Fuel Injected Harley Davidsons (Except 2000-2001 & 2008-2009 Fuel Injected FLT)

Standard Electronic Fuel Injection MAP Sensor for 1995-1998 Harley Davidson Big Twin Performance H-D32424-95 $65.02 . Standard Electronic Fuel Injection MAP Sensor Model #: MC-MAP2 Fitment: 1995-1998 Harley Davidson Big Twin Performance

Standard Electronic Fuel Injection MAP Sensor for 1995-2009 Harley Davidson FL/Softail/Dyna/V-Rod/Screamin Eagle H-D323616-99 $59.57 . Standard Electronic Fuel Injection MAP Sensor Model #: MC-MAP3 Fitment: 1995-2009 Harley Davidson FL 2000-2009 Harley Davidson Softail 1999-2008 Harley Davidson Dyna 2004-2009 Harley Davidson V-Rod 2004-2005 Harley Davidson Screamin' Eagle

Arlen Ness Cheap-Shot Adjustable Fuel Injection Tuner for 1995-2006 Harley Davidson Big Twin except 2006 Dyna $124.46 . Arlen Ness Cheap-Shot Adjustable Fuel Injection Tuner for 1995-2006 Harley Davidson Big Twin (except 2006 Dyna) The Cheap-Shot is an economical solution to add needed fuel after installing exhaust and air cleaner performance upgrades. Arlen Ness's simple splice-in design saves you big money by eliminating costly plug and play connectors found on most other fuel tuners. The Cheap-Shot adjusts much like a carburetor by adjusting four individual pods using an ordinary screw driver. Their load based technology senses the load on the engine in any riding situation to provide the optimal fuel requirement to the engine. Easy to follow installation instructions are provided. Arlen Ness Part# 18-633 Bike Fitment: 1998-2006 Harley Davidson FLHRCI Road King Classic 1996-2006 Harley Davidson FLHRI Road King 2004-2006 Harley Davidson FLHRSI Road King Custom 1996-2006 Harley Davidson FLHTCI Electra Glide Classic 1995-2006 Harley Davidson FLHTCUI Electra Glide Ultra Classic 2003-2006 Harley Davidson FLHTI Electra Glide Standard 2006 Harley Davidson FLHXI Street Glide 2001-2006 Harley Davidson FLSTCI Heritage Softail Classic 2001-2006 Harley Davidson FLSTFI Fat Boy 2006 Harley Davidson FLSTI Heritage Softail 2005-2006 Harley Davidson FLSTNI Softail Deluxe 2005-2006 Harley Davidson FLSTSCI Softail Springer Classic 2001-2003 Harley Davidson FLSTSI Heritage Springer 1996 Harley Davidson FLTCUI TArlen Ness's Glide Ultra Classic 1998-2006 Harley Davidson FLTRI Road Glide 2005 Harley Davidson FXDCI Super Glide Custom 2004-2005 Harley Davidson FXDI Dyna Super Glide 2004-2005 Harley Davidson FXDLI Dyna Low Rider 2004-2005 Harley Davidson FXDWGI Dyna Wide Glide 2004-2005 Harley Davidson FXDXI Dyna Super Glide Sport 2001-2006 Harley Davidson FXSTBI Night Train 2001-2006 Harley Davidson FXSTDI Softail Duce 2001-2006 Harley Davidson FXSTI Softail Standard 2001-2006 Harley Davidson FXSTSI Springer Softail

Cobra Fi2000R Digital Fuel Processor for 1995-2005 Harley Davidson FL Motorcycles $212.46 . Cobra Fi2000R Digital Fuel Processor for 1995-2005 Harley Davidson FL Motorcycles Nearly every fuel-injected motorcycle can benefit from the installation of the Cobra Fi2000R. Better throttle response and smoother cruising are just a few of the areas improved by the Fi2000R. When your engine has the proper air/fuel ratio metered to it it can perform to its full potential run cooler and be a much more satisfying ride. Cobra's Fi2000 arrives pre-configured from the factory for your bike and model. No confusing computer downloads to install. But it also has three adjustment pods should your specific application need it. Each unit comes with detailed instructions showing you how to make those adjustments quickly and easily. It's simple to install: The Fi2000R connects with it's O.E.M. style connectors directly to the engine's fuel-injector bodies. It works with any exhaust system - stock or aftermarket and requires no additional Dyno testing or mapping. *NOTE - This Fi2000R is not legal for street use in California. Fitment: 1998-2005 Harley Davidson FLHRCI Road King Classic 1998-2004 Harley Davidson FLHRCI Road King Classic 2000-2005 Harley Davidson FLHRI Road King 1996-1997 Harley Davidson FLHRI Road King 2004-2005 Harley Davidson FLHRSI Road King Custom 1996-2005 Harley Davidson FLHTCI Electra Glide Classic 1995-2005 Harley Davidson FLHTCUI Electra Glide Ultra Classic 2003-2005 Harley Davidson FLHTI Electra Glide Standard 1996 Harley Davidson FLTCUI Tour Glide Ultra Classic 1998-2005 Harley Davidson FLTRI Road Glide

Cobra Fi2000R Digital Fuel Processor for 2006 Harley Davidson Softail Motorcycles $212.46 . Cobra Fi2000R Digital Fuel Processor for 2006 Harley Davidson Softail Motorcycles Nearly every fuel-injected motorcycle can benefit from the installation of the Cobra Fi2000R. Better throttle response and smoother cruising are just a few of the areas improved by the Fi2000R. When your engine has the proper air/fuel ratio metered to it it can perform to its full potential run cooler and be a much more satisfying ride. Cobra's Fi2000 arrives pre-configured from the factory for your bike and model. No confusing computer downloads to install. But it also has three adjustment pods should your specific application need it. Each unit comes with detailed instructions showing you how to make those adjustments quickly and easily. It's simple to install: The Fi2000R connects with it's O.E.M. style connectors directly to the engine's fuel-injector bodies. It works with any exhaust system - stock or aftermarket and requires no additional Dyno testing or mapping. *NOTE - This Fi2000R is not legal for street use in California. Fitment: 2006 Harley Davidson FLSTCI Heritage Softail Classic 2006 Harley Davidson FLSTFI Fat Boy 2006 Harley Davidson FLSTI Heritage Softail 2006 Harley Davidson FLSTNI Softail Deluxe 2006 Harley Davidson FLSTSCI Softail Springer Classic 2006 Harley Davidson FXSTBI Night Train 2006 Harley Davidson FXSTDI Softail Duce 2006 Harley Davidson FXSTI Softail Standard 2006 Harley Davidson FXSTSI Springer Softail

Cobra Fi2000R Digital Fuel Processor for 2006 Harley Davidson FL Motorcycles $212.46 . Cobra Fi2000R Digital Fuel Processor for 2006 Harley Davidson FL Motorcycles Nearly every fuel-injected motorcycle can benefit from the installation of the Cobra Fi2000R. Better throttle response and smoother cruising are just a few of the areas improved by the Fi2000R. When your engine has the proper air/fuel ratio metered to it it can perform to its full potential run cooler and be a much more satisfying ride. Cobra's Fi2000 arrives pre-configured from the factory for your bike and model. No confusing computer downloads to install. But it also has three adjustment pods should your specific application need it. Each unit comes with detailed instructions showing you how to make those adjustments quickly and easily. It's simple to install: The Fi2000R connects with it's O.E.M. style connectors directly to the engine's fuel-injector bodies. It works with any exhaust system - stock or aftermarket and requires no additional Dyno testing or mapping. *NOTE - This Fi2000R is not legal for street use in California. Fitment: 2006 Harley Davidson FLHRCI Road King Classic 2006 Harley Davidson FLHRI Road King 2006 Harley Davidson FLHRSI Road King Custom 2006 Harley Davidson FLHTCI Electra Glide Classic 2006 Harley Davidson FLHTCUI Electra Glide Ultra Classic 2006 Harley Davidson FLHTI Electra Glide Standard 2006 Harley Davidson FLHXI Street Glide 2006 Harley Davidson FLTRI Road Glide

Cobra Fi2000 PowrPro Tuner Digital Fuel Processor for 2001-2005 Harley Davidson Dyna Softail Motorcycles $509.96 . Cobra Fi2000 PowrPro Tuner Digital Fuel Processor for 2001-2005 Harley Davidson Dyna & Softail Motorcycles With Cobra's Fi2000 PowrPro tuner installed on your bike you have your own personal built-in dyno that analyzes your bike's performance and constantly tunes the air/fuel ratio for ideal EFI delivery and optimum performance. And with the speed of today's microprocessors it tunes on every squirt of the injectors. It's like having the best custom map-writing software and a dyno operator tuning your fuel delivery 80 times a second every time you crank open the throttle. It provides perfect fuel settings under all existing environmental conditions under every kind of load and with any exhaust system or engine modifications. And no matter which components you change in the future whether it's a new exhaust system a free-flowing air filter setup or even a big-bore hop-up kit with new camshafts the Cobra Fi2000 PowrPro continues to analyze and tune your engine for peak performance to deliver maximum acceleration. It is plug-in performance; just hook it up to your bike and immediately enjoy improved power beginning with the first time you twist the throttle. *NOTE - The Fi2000 PowrPro is not legal for street use in California. Fitment: 2001-2005 Harley Davidson FLSTC Heritage Softail Classic 2001-2005 Harley Davidson FLSTCI Heritage Softail Classic 2001-2005 Harley Davidson FLSTF Fat Boy 2001-2005 Harley Davidson FLSTFI Fat Boy 2005 Harley Davidson FLSTN Softail Deluxe 2005 Harley Davidson FLSTNI Softail Deluxe 2001-2003 Harley Davidson FLSTS Heritage Springer 2005 Harley Davidson FLSTSC Softail Springer Classic 2005 Harley Davidson FLSTSCI Softail Springer Classic 2001-2003 Harley Davidson FLSTSI Heritage Springer 2004-2005 Harley Davidson FXD Dyna Super Glide 2005 Harley Davidson FXDC Super Glide Custom 2005 Harley Davidson FXDCI Super Glide Custom 2004-2005 Harley Davidson FXDI Dyna Super Glide 2004-2005 Harley Davidson FXDL Dyna Low Rider 2004-2005 Harley Davidson FXDLI Dyna Low Rider 2004-2005 Harley Davidson FXDWG Dyna Wide Glide 2004-2005 Harley Davidson FXDWGI Dyna Wide Glide 2004-2005 Harley Davidson FXDX Dyna Super Glide Sport 2004-2005 Harley Davidson FXDXI Dyna Super Glide Sport 2001-2005 Harley Davidson FXST Softail Standard 2001-2005 Harley Davidson FXSTB Night Train 2001-2005 Harley Davidson FXSTBI Night Train 2001-2005 Harley Davidson FXSTD Softail Deuce 2001-2005 Harley Davidson FXSTDI Softail Deuce 2001-2005 Harley Davidson FXSTI Softail Standard 2001-2005 Harley Davidson FXSTS Springer Softail 2001-2005 Harley Davidson FXSTSI Springer Softail

Arlen Ness Big-Shot II Adjustable Fuel Injection Tuner for 2008-2009 Harley Davidson FLT $265.56 . Arlen Ness Big-Shot II Adjustable Fuel Injection Tuner for 2008-2009 Harley Davidson FLT Improving upon the original Big Shot the Big Shot II now gives the user the ability to add or subtract fuel from the fuel injection system. Using the same load based technology as the original Big Shot the Big Shot II always knows how much fuel your bike needs whether you're going uphill downhill cruising or even towing a trailer. Even temperature and elevation do not affect the Big Shot II; essentially only time adjustment is needed is when you modify your engine. The Big Shot II is a plug and play system and does not require the use of a computer or dyno machine to get your bike running great. NOTE: This product is 49-State Legal Only. CARB approved systems are available for customers living in California but only sold through ArlenNess.com Pull up to 10% of fuel out of the system 16 positions of adjustability Adjustable to your riding style Ability to tell the system how much fuel to add and when 2 year warranty Arlen Ness Part# 18-656 Bike Fitment: 2008-2009 Harley Davidson FLHR Road King 2008-2009 Harley Davidson FLHR/I Road King 2008-2009 Harley Davidson FLHRC Road King Classic 2008-2009 Harley Davidson FLHRC/I Road King Classic 2008-2009 Harley Davidson FLHRCI Road King Classic 2008-2009 Harley Davidson FLHT Electra Glide Standard 2008-2009 Harley Davidson FLHT/I Electra Glide Standard 2008-2009 Harley Davidson FLHTC Electra Glide Classic 2008-2009 Harley Davidson FLHTC/I Electra Glide Classic 2008-2009 Harley Davidson FLHTCU Electra Glide Ultra Classic 2008-2009 Harley Davidson FLHTCU/I Electra Glide Ultra Classic 2008-2009 Harley Davidson FLHTCUTG Tri Glide Ultra Classic 2008-2009 Harley Davidson FLHX Street Glide 2008-2009 Harley Davidson FLTR Road Glide 2008-2009 Harley Davidson FLTR/I Road Glide 2008-2009 Harley Davidson FLTRI Road Glide

Cobra Fi2000 PowrPro Tuner Digital Fuel Processor for 2006 Harley Davidson Softail Motorcycles $509.96 . Cobra Fi2000 PowrPro Tuner Digital Fuel Processor for 2006 Harley Davidson Softail Motorcycles With Cobra's Fi2000 PowrPro tuner installed on your bike you have your own personal built-in dyno that analyzes your bike's performance and constantly tunes the air/fuel ratio for ideal EFI delivery and optimum performance. And with the speed of today's microprocessors it tunes on every squirt of the injectors. It's like having the best custom map-writing software and a dyno operator tuning your fuel delivery 80 times a second every time you crank open the throttle. It provides perfect fuel settings under all existing environmental conditions under every kind of load and with any exhaust system or engine modifications. And no matter which components you change in the future whether it's a new exhaust system a free-flowing air filter setup or even a big-bore hop-up kit with new camshafts the Cobra Fi2000 PowrPro continues to analyze and tune your engine for peak performance to deliver maximum acceleration. *NOTE - The Fi2000 PowrPro is not legal for street use in California. Fitment: 2006 Harley Davidson FLST Heritage Softail 2006 Harley Davidson FLSTC Heritage Softail Classic 2006 Harley Davidson FLSTCI Heritage Softail Classic 2006 Harley Davidson FLSTF Fat Boy 2006 Harley Davidson FLSTFI Fat Boy 2006 Harley Davidson FLSTI Heritage Softail 2006 Harley Davidson FLSTN Softail Deluxe 2006 Harley Davidson FLSTNI Softail Deluxe 2006 Harley Davidson FLSTSC Softail Springer Classic 2006 Harley Davidson FLSTSCI Softail Springer Classic 2006 Harley Davidson FXST Softail Standard 2006 Harley Davidson FXSTB Night Train 2006 Harley Davidson FXSTBI Night Train 2006 Harley Davidson FXSTD Softail Duce 2006 Harley Davidson FXSTDI Softail Duce 2006 Harley Davidson FXSTI Softail Standard 2006 Harley Davidson FXSTS Springer Softail 2006 Harley Davidson FXSTSI Springer Softail

Raider Universal Fuel Shutoff Valve $35.38 This shutoff valve from Raider features a durable metal construction. This universal valve is designed for use with 1/4-inch motorcycle fuel lines. Brand: RaiderUniversal Fuel Shutoff ValveModel: 07-7118Fits 1/4-inch lineFor use on motorcycleMaterials: MetalDimensions: 6 inches high x 6 inches wide x 6 inches deep

Billet Fuel Doors $115.99 Billet Fuel Doors; Brushed Chrome; Non-Locking; Aluminum; Harley Davidson; Ring O.D. 6-13/16 in.; Door O.D. 4-1/2 in.;

Billet Fuel Door $94.99 Billet Fuel Door; Brushed; Aluminum; Harley Davidson; Ring O.D. 6 5/8 in.; Door O.D. 4 1/2 in.;